Cocoa Core Data Timestamp Converter

Apple Cocoa Core Data timestamp to human readable date

Core Data is a data storage framework to manage objects in iOS and OS X applications. Core Data is part of the Cocoa API. These timestamps are sometimes labeled
'Mac absolute time'.

A Core Data timestamp is the number of seconds (or nanoseconds) since midnight, January 1, 2001 GMT (see
CFAbsoluteTime).
The difference between a Core Data timestamp and a Unix timestamp (seconds since 1/1/1970) is 978307200 seconds.

The current Core Data timestamp is 566907743
or in nanoseconds: 566907743000000000